Obviously that's a risk, but so is blind faith in trusted experts. I don't think your examples really relate to this situation, because there wasn't a convincing expert argument that the housing bubble was economically sustainable, the arguments that it was unsustainable were simply ignored by trusted experts, for the most part. I mean, I think I found Nouriel Roubini through a post by Brad DeLong, but I don't think DeLong ever actually addressed his concerns.